SMPS controller. TEA1733CP Datasheet

TEA1733CP controller. Datasheet pdf. Equivalent

TEA1733CP Datasheet
Recommendation TEA1733CP Datasheet
Part TEA1733CP
Description GreenChip SMPS controller
Feature TEA1733CP; TEA1733CP GreenChip SMPS control IC Rev. 2 — 15 July 2013 Product data sheet 1. General descriptio.
Manufacture NXP
Datasheet
Download TEA1733CP Datasheet




NXP TEA1733CP
TEA1733CP
GreenChip SMPS control IC
Rev. 2 — 15 July 2013
Product data sheet
1. General description
The TEA1733CP is a low cost Switched Mode Power Supply (SMPS) controller IC
intended for flyback topologies. It operates in fixed frequency mode. To reduce
ElectroMagnetic Interference (EMI), frequency jitter has been implemented. Slope
compensation is integrated for Continuous Conduction Mode (CCM) operation.
The TEA1733CP includes OverPower Protection (OPP). This enables the controller to
operate under overpower situations for a limited amount of time.
Two pins, VINSENSE and PROTECT, are reserved for protection purposes. Input
UnderVoltage Protection (UVP) and OverVoltage Protection (OVP), output OVP and
OverTemperature Protection (OTP) can be implemented using a minimal number of
external components.
At low power levels the primary peak current is set to 25 % of the maximum peak current
and the switching frequency is reduced to limit switching losses. The combination of fixed
frequency operation at high output power and frequency reduction at low output power
provides high-efficiency over the total load range.
The TEA1733CP enables low cost, highly efficient and reliable supplies for power
requirements up to 75 W to be designed easily and with a minimum number of external
components.
2. Features and benefits
2.1 Features
SMPS controller IC enabling low-cost applications
Large input voltage range (12 V to 30 V)
Very low supply current during start-up and restart (typically 10 A)
Low supply current during normal operation (typically 0.5 mA without load)
Overpower or high/low line compensation
Adjustable overpower time-out
Adjustable overpower restart timer
Fixed switching frequency with frequency jitter to reduce EMI
Frequency reduction with fixed minimum peak current to maintain high-efficiency at
low output power levels
Slope compensation for CCM operation
Low and adjustable OverCurrent Protection (OCP) trip level



NXP TEA1733CP
NXP Semiconductors
TEA1733CP
GreenChip SMPS control IC
Adjustable soft start operation
Two protection inputs (for example: for input UVP and OVP, OTP and output OVP)
IC overtemperature protection
3. Applications
All applications requiring efficient and cost-effective power supply solutions up to
75 W.
4. Ordering information
Table 1. Ordering information
Type number
Package
Name
Description
TEA1733CP
DIP8
plastic dual in-line package; 8 leads (300 mil)
Version
SOT97-1
TEA1733CP
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 15 July 2013
© NXP B.V. 2013. All rights reserved.
2 of 20



NXP TEA1733CP
NXP Semiconductors
5. Block diagram
TEA1733CP
GreenChip SMPS control IC
1
VCC
22 V
2
GND
clamp
clamp
power down
21 V
VCCstart Vctrl(Ipeak)
400 mV
12 V
VCCstop
6V
DQ
driver
overpower
2.5 V
latch 5 V
restart
latch reset
OPP switch
TEMPERATURE
PROTECTION
OTP
RESTART
CONTROL
OPP switch
107 μA
set
δmax
OSCILLATOR
frequency reduction
OPTIMER
1.2 V / 4.5 V
Vctrl(Ipeak)
ANALOG
CONTROL
MODULATION
SLOPE
COMPENSATION
11 μA
8
OPTIMER
5.4 V
7 kΩ
7
CTRL
DRIVER
DRV
3
S
Q
R
set
stop
δmax
restart
ISENSE
55
μA
4
BLANK
soft start LEB
soft start
Vctrl(Ipeak)
OCP
stop
OVERPOWER
CORRECTION
latch
VINSENSE
restart
S
Q
R
latch
S
Q
R
OTP
VCCstop
overpower
highvin
lowvin
prothigh
protlow
VCCstart
power down
lowvin
protlow
prothigh
protlow
highvin
latch reset
lowvin
DIGITAL CONTROL
0.50 V/0.80 V
32
μA
6
107
μA
PROTECT
3.52 V
0.72 V/0.94 V
5
VINSENSE
Fig 1. Block diagram
aaa-001529
TEA1733CP
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 15 July 2013
© NXP B.V. 2013. All rights reserved.
3 of 20







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